SQL missing functions

You probably better:
1. Try to find a Textmate bundle for it (Have you tried https://github.com/Kieren/sql-mysql.tmlanguage ?)
2. Update SQL.tmLanguage yourself, is not very difficult (take a look at http://sublimetext.info/docs/ )

than waiting for an update.
Coding a great editor is a totally different task than creating language syntax definition.